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Finding the Fourth Proportional to 29,421.74, 40,602.03 and 15,992.99

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Solution

The fourth proportional to 29,421.74, 40,602.03 and 15,992.99 is: 22,070.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,421.74 : 40,602.03 = 15,992.99 : x
  2. Step 2: Convert to fraction form
    29,421.74/40,602.03 = 15,992.99/x
  3. Step 3: Cross multiply
    29,421.74x = 40,602.03 × 15,992.99
  4. Step 4: Simplify right side
    29,421.74x = 649,347,901.30
  5. Step 5: Solve for x
    x = 649,347,901.30/29,421.74
  6. Step 6: Final answer
    x = 22,070.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.